53 lines
1.9 KiB
Diff
53 lines
1.9 KiB
Diff
Subject: drm,radeon,i915: Use preempt_disable/enable_rt() where recommended
|
|
From: Mike Galbraith <umgwanakikbuti@gmail.com>
|
|
Date: Sat, 27 Feb 2016 08:09:11 +0100
|
|
Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.9/older/patches-4.9.30-rt20.tar.xz
|
|
|
|
DRM folks identified the spots, so use them.
|
|
|
|
Signed-off-by: Mike Galbraith <umgwanakikbuti@gmail.com>
|
|
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
Cc: linux-rt-users <linux-rt-users@vger.kernel.org>
|
|
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
|
|
---
|
|
drivers/gpu/drm/i915/i915_irq.c | 2 ++
|
|
drivers/gpu/drm/radeon/radeon_display.c | 2 ++
|
|
2 files changed, 4 insertions(+)
|
|
|
|
--- a/drivers/gpu/drm/i915/i915_irq.c
|
|
+++ b/drivers/gpu/drm/i915/i915_irq.c
|
|
@@ -812,6 +812,7 @@ static int i915_get_crtc_scanoutpos(stru
|
|
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
|
|
|
|
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
|
|
+ preempt_disable_rt();
|
|
|
|
/* Get optional system timestamp before query. */
|
|
if (stime)
|
|
@@ -863,6 +864,7 @@ static int i915_get_crtc_scanoutpos(stru
|
|
*etime = ktime_get();
|
|
|
|
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
|
|
+ preempt_enable_rt();
|
|
|
|
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
|
|
|
|
--- a/drivers/gpu/drm/radeon/radeon_display.c
|
|
+++ b/drivers/gpu/drm/radeon/radeon_display.c
|
|
@@ -1845,6 +1845,7 @@ int radeon_get_crtc_scanoutpos(struct dr
|
|
struct radeon_device *rdev = dev->dev_private;
|
|
|
|
/* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */
|
|
+ preempt_disable_rt();
|
|
|
|
/* Get optional system timestamp before query. */
|
|
if (stime)
|
|
@@ -1937,6 +1938,7 @@ int radeon_get_crtc_scanoutpos(struct dr
|
|
*etime = ktime_get();
|
|
|
|
/* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */
|
|
+ preempt_enable_rt();
|
|
|
|
/* Decode into vertical and horizontal scanout position. */
|
|
*vpos = position & 0x1fff;
|